Video 2, Parrots: http://video.nationalgeographic.com/video/player/?widgets=unknown%7cSyndicatedVideoPlayer Characteristics ◦ body structure Feathers, wings, beak Thin, hollow bones Large sternum ◦ body function Very efficient lungs & air sacs Unidirectional air flow Four-chambered heart Endotherms (warm-blooded) Keen eyesight - 8-10x better than humans Characteristics ◦ Reproduction internal fertilization external development in amniotic egg ◦ Hatchlings Altricial – young hatch without feathers and are dependent on adults. ex) Red-tailed hawk Precocial – young hatch fully feathered and follow mother; 10-15 eggs; ex) turkey Large Variety of diets ◦ Seeds, nectar, insects, small animals, carrion ◦ Beaks indicate diet Feather Types ◦ Flight – for flying ◦ Contour – covers bird body ◦ Down – used for insulation Males are usually more brightly colored Feathers ◦ Extremely light (may have evolved from scales) No teeth Hollow bones Sternum allows for attachment of powerful flight muscles Flight requires energy and efficiency ◦ Heartbeat pumps blood carrying oxygen to the muscles at 1000 beats/minute ◦ Air flow system is unidirectional, making it more efficient Kingdom: Animalia ◦ Phylum: Chordata Subphylum: Vertebrata Class: Aves
Bee Hummingbird Emperor Penguin Ostrich Owl Bald Eagle
this is a sweet article
Video 1, Hummingbirds:
http://video.nationalgeographic.com/video/player/?widgets=unknown%7cSyndicatedVideoPlayer
Video 2, Parrots:
http://video.nationalgeographic.com/video/player/?widgets=unknown%7cSyndicatedVideoPlayer
Characteristics
◦ body structure
Feathers, wings, beak
Thin, hollow bones
Large sternum
◦ body function
Very efficient lungs & air sacs
Unidirectional air flow
Four-chambered heart
Endotherms (warm-blooded)
Keen eyesight - 8-10x better than humans
Characteristics
◦ Reproduction
internal fertilization
external development in
amniotic egg
◦ Hatchlings
Altricial – young hatch without feathers and are dependent on adults. ex) Red-tailed hawk
Precocial – young hatch fully feathered and follow mother; 10-15 eggs; ex) turkey
Large Variety of diets
◦ Seeds, nectar, insects, small animals, carrion
◦ Beaks indicate diet
Feather Types
◦ Flight – for flying
◦ Contour – covers bird body
◦ Down – used for insulation
Males are usually more brightly colored
Feathers
◦ Extremely light (may have evolved from scales)
No teeth
Hollow bones
Sternum allows for attachment of powerful flight muscles
Flight requires energy and efficiency
◦ Heartbeat pumps blood carrying oxygen to the muscles at 1000 beats/minute
◦ Air flow system is unidirectional, making it more efficient
Kingdom: Animalia
◦ Phylum: Chordata
Subphylum: Vertebrata
Class: Aves